Definitions

1. verb

to have a violent or convulsive movement, especially of the body, or to be shocked or startled into a sudden movement or action

“The patient convulsed violently as the doctor administered the medication.”

2. verb

to cause to have a violent or convulsive movement

“The news of the accident convulsed the community.”

3. noun

a violent or convulsive movement of the body

“The convulsion lasted for several minutes before it subsided.”